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Windtech International July August 2024 issue






ECN and LM Wind Power are working on innovative blade tips to improve offshore wind park yields.  To influence the wake behind the turbine, ECN and LM Wind Power designed a special tip.

With the new tips, the power production will increase by two to six per cent:

  • A tip specifically designed for offshore conditions: designed for integral optimisation of turbines without considering noise limitations.
  • An innovative wake reduction tip, invented by ECN: the zigzag shape increases turbulence in the boundary of the wake which increases the yield of offshore wind farms.

These designs were validated on 2.5MW-sized wind turbines at ECN’s wind turbine test facility in the Wieringermeer. The results of the test at these 80 metre large rotor blades demonstrated that an increased farm power output up to six per cent is achievable through these blade tips.

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